Adaptor to enable coating machine to accommodate shoe sole or the like of irregular thickness

ABSTRACT

For use in connection with an adhesive cement coating machine for combined sole-heel assemblages or like workpieces of irregular thickness, which coating machine has a lower applicator roll partially immersed in liquid cement and an upper feed roll journaled on a pivotal mounting for swinging toward and away from the applicator roll, an attachment is provided to enable workpieces of irregular thickness to advance between the rolls. The adaptor comprises a drum which is journaled on a second pivotal mounting carried by the first pivotal mounting, so that the inner surface of the drum is biased against the outer surface of the feed roll and the outer surface of the drum is biased toward the applicator roll and against a workpiece interposed between the applicator roll and the external surface of the drum.

States Patent Copithorne [451 Feb. 11, 1975 [75] Inventor: Alton R. Copithorne, Rowley, Mass. [73] Assignee: Boston Machine Works C0., Lynn,

Mass.

[22] Filed: June 12, 1973 [21] Appl. N0.: 369,217

52 us. c1. .f. 118/250 [51] Int. Cl. B05c 1/02 [58] Field of Search 118/249, 248, 253, 250, 1 18/257, 228

[56] References Cited UNITED STATES PATENTS 1,141,311 6/1915 Brogan 118/228 1,851,162 3/1932 Cosgrove 118/250 X Primary Examiner-Ronald Feldbaum Attorney, Agent. or Firm-Morse, Altman, Oates & Bello [57] ABSTRACT For use in connection with an adhesive cement coating machine for combined sole-heel assemblages or like workpieces of irregular thickness, which coating machine has a lower applicator roll partially immersed in liquid cement and an upper feed roll journaled on a pivotal mounting for swinging toward and away from the applicator roll, an attachment is provided to en able workpieces of irregular thickness to advance between the rolls. The adaptor comprises a drum which is journaled on a second-pivotal mounting carried by the first pivotal mounting, so that the inner surface of the drum is biased against the outer surface of the feed roll and the outer surface of the drum is biased toward the applicator roll and against a workpiece interposed between the applicator roll and the external surface of the drum.

[0 Claims, 6 Drawing Figures ADAPTOR TO ENABLE COATING MACHINE TO ACCOMODATE SHOE SOLE OR THE LIKE OF IRREGULAR THICKNESS BACKGROUND OF THE INVENTION 1. Field of the Invention:

This invention relates to coating machines for bonding cement and, more particularly, to coating machines for applying cement in an even layer to such workpieces as integrated sole and heel assemblages of irregular thickness.

2. Prior Art:

In the manufacture of certain types of shoes, the shoe soles are cemented to the shoe uppers by a liquid bond ing cement which is applied to the back surface of the shoe sole. In one machine for this purpose, the shoe sole is held manually against an applicator and is turned about so that the shoe sole margin receives a coating of the cement. This procedure, although capable of achieving uniform coating, involves undue attention by skilled personnel since each shoe bottom must be manipulated individually. A more typical machine involves repetitive feed-through operation, in which the shoe sole is fed directly between a pair of rolls, the lower of which is partially submerged in the cement so as to carry a film of cement about its surface as it rotates and the upper of which is provided to press the shoe sole against the lower roll. The upper roll is journaled on a pivoted mount, which enables it to rock to ward and away from the lower roll as it encounters the irregular thicknesses of the advancing shoe sole. In such machines, the relatively small diameters of the upper and bottom rolls may be such as to catch the shoe sole bottom at one of its irregularities so as to prevent it from advancing.

SUMMARY OF THE INVENTION The primary object of the present invention is to provide an adaptor for association with a coating machine of the foregoing type in order to ensure feeding of irregularly thick shoe soles or other workpieces through a cement coating machine. This adaptor is in the form of a barrel, which is journaled on the pivoted mount for the top roll in such a way that the barrel shell is interposed between the top feed roll and the bottom applicator roll and is resiliently urged against the top roll so as to rotate therewith. The large diameter of the barrel provides a sufficiently gradual periphery to preclude catching of any irregular portion of an advancing workpiece.

Other objects of the present invention will in part be obvious and will in part appear hereinafter.

The invention accordingly comprises the machine, its components and their interrelationships, which are exemplified in the present disclosure, the scope of which will be indicated in the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS For a fuller understanding of the nature and objects of the present invention, reference is made to the following detailed description, which is to be taken in connection with the accompanying drawings, wherein:

FIG. l is a perspecitve view of a coating machine of the type for which the adaptor of the present invention is intended;

FIG. 2 is an association of the coating machine of FIG. 1 and an adaptor embodying the present invention;

FIG. 3 is a front view of the combination of FIG. 2, illustrating a phase of its operation;

FIG. 4 'is a front view of the combination of FIG. 2, illustrating the next phase of its operation;

FIG. 5 is a front view of the combination of FIG. 2, illustrating the next phase of its operation; and

FIG. 6 is a side view of the combination of FIG. 2.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Generally, the coating machine of FIG. 1 comprises a forward tank 10 containing a liquid cement, the level of which is shown at 12, a bottom. applicator roll 14, the lower portion of which is immersed in cement l2, and a top feed roll 16. A shoe sole-heel assemblage to be coated with cement is fed in the direction indicated at 18 between top roll 16 and bottom roll 14. As shown, bottom roll 14 is journaled at its opposite ends in bearings affixed to tank 10, one such beating being shown at 20. Feed roll 16 is journaled at its opposite ends in bearings, one of which is shown at 22. Bearings 22 are carried by a hollow cantilever mount 24, one end of which is free and the other end of which is affixed to a mount 26 that is pivoted as at 28 to a base 30. It will be observed that as a shoe sole-heel assemblage of irregular thickness advances in the direction 18 between rolls 14, 16, roll 16 orbits about axis 28in one direction or the other as different thicknesses of the sole-heel assemblage present themselves between rolls 14, 16.

As shown in FIG. 2, an auxilliary mount 32 is journaled on feed roll mount 24 at "the forward and rearward ends of a shaft 34. Auxiliary mount 32 includes a pair of brackets, one sbown at 33, which are keyed to the rearward and forward extremities of shaft 34, which extends from position 36 to position 38 of base mount 24. As shown, a shaft 40 is fixed in brackets 33 in order to journal a drum 42 for rotation about the axis of shaft 40. It will be observed that the shell of drum 42 is interposed between roll 16 and] roll 14. Each bracket 33 has an extending finger 44 in association with a compression spring 46, by which this bracket 33 is pivotally biased about shaft 34 in such a way that the inner periphery of the shell of drum 4?. is pressed against the other periphery of roll 16.

As shown in FIG. 6, the arrangement is such that roll 16 is driven by a shaft through mount 26 via a gear train 48 from an electrical drive motor (not shown).

OPERATION As shown in FIG. 3, theinner surface of barrel 42 is pressed against roll 16 by compression spring 46 and the outer periphery of drum 42 rests on roll 14. Initially, base mount 26 is pivoted into its most clock wise position about pivot 28. As the sole position of assemblage 50 advances, base mount 26 pivots into a counterclockwise position about pivot 28. As the heel portion of assemblage 50 advances, base mount 26 pivots into an even more counterclockwise position about pivot 28. Because of the large diameter of the drum, the heel portion does not catch as it goes through the bight between the drum and the applicator roll.

CONCLUSION The present invention thus provides an attachment for enabling a prior art cement applying machine to accomodate a variety of workpieces of different thicknesses. Since certain changes may be made in the foregoing disclosure without departing from the scope of the invention herein involved, it is intended that all matter contained in the foregoing description or shown in the accompanying drawings be interpreted in an illustrative and not in a limiting sense.

What is claimed is:

1. An attachment for a coating machine having a base, a bottom applicator roll partially immersed in a fluid cement, a feed roll and a base mount carrying said feed roll, said base mount being constrained for movement about an axis of said base mount toward and away from said applicator roll, said attachment comprising an auxiliary mount constrained for movement with respect to said base mount, a drum rotatably mounted on said auxiliary mount for disposal of the shell of said drum between said feed roll and said applicator roll, said feed roll resting longitudinally against the inside surface of said drum, and means for biasing the inner surface of said drum against said feed roll.

2. The attachment of claim 1 wherein said base mount is pivotally mounted on said base.

3. The attachment of claim 1 wherein said auxiliary mount is pivotally mounted on said base mount.

4. The attachment of claim 1 wherein said feed roll rocks with respect to said applicator roll.

5. The attachment of claim 1 wherein said means for biasing is a compression spring.

6. A coating machine having a base, a bottom applicator roll partially immersed in a fluid cement, a feed roll, a base mount carrying asid feed roll, said base mount being constrained for movement about an axis of said base mount toward and away from said applicator roll, an auxiliary mount constrained for movement with respect to said base mount, a drum rotatably mounted on said auxiliary mount for disposal of the shell of said drum between said feed roll and said applicator roll, said feed roll resting longitudinally against the inside surface of said drum, and means for biasing the inner surface of said drum against said feed roll.

7. The attachment of claim 6 wherein said base mount is pivotally mounted on said base.

8. The attachment of calim 6 wherein said auxiliary mount is pivotally mounted on said base mount.

9. The attachment of claim 6 wherein said feed roll rockes with respect to said applicator roll.

10. The attachment of claim 6 wherein said means for biasing is a compression spring. 

1. An attachment for a coating machine having a base, a bottom Applicator roll partially immersed in a fluid cement, a feed roll and a base mount carrying said feed roll, said base mount being constrained for movement about an axis of said base mount toward and away from said applicator roll, said attachment comprising an auxiliary mount constrained for movement with respect to said base mount, a drum rotatably mounted on said auxiliary mount for disposal of the shell of said drum between said feed roll and said applicator roll, said feed roll resting longitudinally against the inside surface of said drum, and means for biasing the inner surface of said drum against said feed roll.
 2. The attachment of claim 1 wherein said base mount is pivotally mounted on said base.
 3. The attachment of claim 1 wherein said auxiliary mount is pivotally mounted on said base mount.
 4. The attachment of claim 1 wherein said feed roll rocks with respect to said applicator roll.
 5. The attachment of claim 1 wherein said means for biasing is a compression spring.
 6. A coating machine having a base, a bottom applicator roll partially immersed in a fluid cement, a feed roll, a base mount carrying asid feed roll, said base mount being constrained for movement about an axis of said base mount toward and away from said applicator roll, an auxiliary mount constrained for movement with respect to said base mount, a drum rotatably mounted on said auxiliary mount for disposal of the shell of said drum between said feed roll and said applicator roll, said feed roll resting longitudinally against the inside surface of said drum, and means for biasing the inner surface of said drum against said feed roll.
 7. The attachment of claim 6 wherein said base mount is pivotally mounted on said base.
 8. The attachment of calim 6 wherein said auxiliary mount is pivotally mounted on said base mount.
 9. The attachment of claim 6 wherein said feed roll rockes with respect to said applicator roll.
 10. The attachment of claim 6 wherein said means for biasing is a compression spring. 